20738026 has 4 divisors (see below), whose sum is σ = 31107042. Its totient is φ = 10369012.

The previous prime is 20738021. The next prime is 20738033. The reversal of 20738026 is 62083702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62083702 = 2 ⋅31041851.

It can be written as a sum of positive squares in only one way, i.e., 20241001 + 497025 = 4499^2 + 705^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20737985 and 20738003.

It is not an unprimeable number, because it can be changed into a prime (20738021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5184505 + ... + 5184508.

Almost surely, 2^20738026 is an apocalyptic number.

20738026 is a deficient number, since it is larger than the sum of its proper divisors (10369016).

20738026 is a wasteful number, since it uses less digits than its factorization.

20738026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10369015.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20738026 is about 4553.9022826582. The cubic root of 20738026 is about 274.7403654178.

The spelling of 20738026 in words is "twenty million, seven hundred thirty-eight thousand, twenty-six".